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, Schematic in-plane arrangement of the moments in a Bloch skyrmion (green arrows) and the Lorentz deflections of the transmitted electrons (shown in red arrows) to give a ring type LTEM pattern of the deflected electrons (lower part of the figure). h, In-plane spin arrangement of an antiskyrmion, For an antiskyrmion the magnetization rotates both as a transverse helix (within the dashed rectangles 1and 3 in b) and as a cycloid (within the dashed rectangles 2 and 4 in b). g
, of helical magnetic structure and skyrmions, respectively. The insets of e depicts the sinusoidal change of the in-plane magnetization with period of the helix
, Under-focused LTEM image taken at a, 350 K in a field of 0.22 T, b, 100 K and field of 0.33 T and c, 100 K and zero field. A single antiskyrmion in zero field is shown inside a dashed circle. d, Magnetic isotherms, M (H), at different temperatures for Mn 1.4 Pt 0.9 Pd 0.1 Sn. The data are normalized by dividing the magnetization value at 1 T. e, H-T phase diagrams for Mn 1.4 PtSn derived from the LTEM measurements with field along [001]. The phase diagram represents different phases at different field and temperature values, helical phase (H, *), skyrmions (skx, *), mixed phase of helical and skyrmions (H+skx, *), field polarized state (FP) and mixed phase of skyrmions and field polarized (skx+FP, *)